Laboratory-burner



(No Model.)

J. F. BARKER.

LABORATORY BURNER, SPECIALLY-QSEFUL WITH GASOLINE GAS. No. 423,896.

Patented Mar. 25, 1890.

Parana. QFFlQEQ JOHN F BARKER, (ll? SPRlNGFIhLD; MASSACHUSETTS.

E. .=AQ(.BFEATOR'YElijiihiiifi S$EC1ALLY UQEF'UL. Wllhi GASQMNE Gl fi.

SPECIFKOATIOI-E forming part of Letters Patent hi0. 423,896, dated. Marhfiii 1890.

Application filed April23,-1888. Renewed January 29, 1890. Serial K038814381 E0 model-1 which is supported by the legs Z) 1) upon the base c. At the top of this valve-chamber there is a needle-vahre. The nndersnitable pressure, finds access to the valve-ehainher through the side tube (1.

The letter 8 denotes the needle of the needle valve; which is threaded, and the thread takes into a'eorresponding female thread in the bottom of the valrre-elnimber, so that the needle projects through the bottom of the valve ehaniber, and below the same is provided with wheel or handle f. t The letter 5 denotes a hood snrroumlmg he outside of the needle-valve. It is interiorly screw-iiireaded, and this thread takes into the thread hen the exterior of thevalveher is formed with .an opening in the base; which extends up into the stand, forming a chamber, as at 2, to afford room for the movements of the threaded needle and its handwheel, substantially as shown.

l claim as my improvement-,

The combination of thebase 0, formed with a valve-chamber (1, having a jet-orifice and an imlnction-pipe, and formed with an open in g and chamber 2 in its base, and the threaded needle e, having a hand-wheel jj arrang'ed within the valve chamber, with the I handwheel in the chamber at the base of the stand, substantially as described.

i JOHN F. BARKER.

Witnesses:

GEO. COSTER,

FRED QosTER.

The stand of the valve-cham- It is hereby certified that in Letters Patent No. 423,896, granted March 25,1890,

upon the application of John F. Barker, of Springfield, Massachusetts, for an improye ment in Laboratory Burners, Specially Useful with Gasoline Gas, an error appears in the printed specification requiring the following correction, viz: In line 51 a comma should be inserted after the reference-letter f; and that the said Letters Patent should be read with this correction thereinthat the same may conform to the record of the-case in the Patent Ofiice. I I I Sigi'ied, coniitersigned and sealed this 6th day of February, A, D. 1894= [SE.AL.] JNQ. 'M, REYNOLDS,

Assistant Secretary of the Interior.

Gonntersigned:

Jenn S: SnY o n,

flommieeioaer of Pcrtenie.

Patent Ila is hereby certified that in Letters intent No. 423,896, gennted Mar-eh 25, 1890, upon the application n1 John F. Barker, of S n'ingfield, Massachusetts, for an improye meat in Laboratory Burners, Specially Useful with Gasoline Gus, an ex m; appears in the printed specification requiring the lhllowing correction, viz: In line 5!, a comma shonld be inserted after the reference-letter f,- mnl that .the said i ve'tger's Patent should be read 'with this corre therein that the same may conform to @he record of the-case in the Patent Ofllce.

Signed, countersigned, mu l sealed this 6th draay of Febi'ua'ry, A. DQ125234;

[sEAL.] JNo. M. neurones,

Assistant Secretary of the Infiw'ior. I Goun'tersigned:

JOHN SQ SEYMOUR,

Omnmisaioner of Patents. 

